Saw-mill carriage



(No Model.)

T. S. WILKIN.

SAW MILL GARRIAGE.

Patented Oct. '7, 1890.

Tu: nonma arms ca. morn-mum, msum UNITED STATES PATENT OFFICE.

THEODORE S. W'ILKIN, OF MILWAUKEE, WISCONSIN.

SAW-MILL CARRIAGE.

SPECIFICATION forming part of Letters Patent No. 437,957, dated. October7, 1890.

Application filed August 6,1888. Serial No. 282,050. (No model.)

To all whom it may concern.-

Be it known that I, THEODORE S. WILKIN, of Milwaukee, in the county ofMilwaukee, and in the State of Wisconsin, have invented certain new anduseful Improvements in Saw- Mill Carriages; and I do hereby declare thatthe following is a full, clear, and exact description thereof.

My invention relates to saw-mill carriages, and will be fully describedhereinafter.

In the drawings, Figure 1 is a vertical transverse section on line 1 1,Fig. 2, of a saw-mill carriage embodying my invention. Fig. 2 is asection on line 2 2, Fig. 1. Fig. 3 is an elevation of one axle-boxpartly broken away; and Fig. i is a section on line 4 4, Fig. 3.

A is a head-block of the carriage, and B B are the longitudinal beams ofthe same.

0 are the axle-boxes, and D are links, each of which passes throughaslot in the beam B and is pivoted at one end in a housing F in theunder side of the head-block by a bolt 0,

and at its other end is pivoted to one of the boxes vG, this end fittingbetween cars a a, that receive the pivot-bolt b. Collars cl prevent theboxes 0 from sliding inwardly on the axle G, and a collar f and nut gconfine the outer wheel G on each axle. The journals of the axle turnloosely therein in collars f, and these collars are formed with recessesf one on each sideand the fingers 2' of a spanner j project into them.The spanner j is carried by a rock-shaft K, which is journaled inbrackets L, that are bolted to the beam B, and this shaft carries aspanner for each axle, as well as a lever M, by which it (the shaft) isoperated.

The object of my invention is to facihtate the shifting of thehead-block independently of the axles, and it operates as follows: Theaxles form the fulcrum of the lever M, and the inner wheels G areslieaved to fit their rail, and therefore if the lever M be drawn in thedirection indicated by the arrow, Fig. 1,

it will draw the carriage with it as far as the links D will permit,inclining the links, as shown in Fig. 1, and if the lever be thrust backit will advance the carriage.

Flanged shoes 1? are secured to the under side of beams B by bolts R,which flanged shoes inclose the sides of the upper portion of theaxle-boxes C and by contact therewith serve to relieve the links D ofundue strain.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is- I 1. The combination, with asaw-mill carriage, of axle-bearings movably connected thereto by linkspivoted to the carriage and to the bearings, a rock-shaft journaled uponthe carriage and operatively connected with one end of one of thetruck-axles, and an upwardly-extending hand-lever carried by said shaft,whereby the movements of the operating-lever are fulcrumed upon thetruck-axle and serve to move the carriage transversely thereon,substantially as described.

2. The combination, with a saw-mill carriage, of axle -bearings movablyconnected thereto by links pivoted to the carriage and to the bearings,a rock-shaft journaled upon the carriage, an upwardly-extendinghand-lever carried by said rock-shaft, recessed collars secured upon thetruck-axles, and spanners mounted upon the rock-shaft and engaging saidcollars, so as to constitute the fulcrums for the operating-lever inshifting said carriage laterally upon the bearings, substantially as setforth.

In testimony that I claim the foregoing I have hereunto set my hand, atMilwaukee, in the county of Milwaukee and State of Wisconsin, in thepresence of two witnesses.

THEODORE S. WILKIN. Witnesses:

STANLEY S. STOUT, GEO. M. CONWAY.

